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Old 06-26-2002, 09:47 AM   #11
 
Join Date: Mar 2002
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Big Jon, you mentioned that a gunsmith had already done work on this firearm? Did he replace the mainspring or is it still factory?

Here is were you may run into problems. If the mainspring has less than 20 pounds, certain ammunitions will not ignite. I did a test with my gun and it failed to fire rifle primers and there are one or two companies that use rifle primers to mask pressure signs on their ammunitions. Something that may or may not be a problem in your situation. I shoot Gold Dot ammunition and is not a problem. Again, my gun has a little more aggressive grinding of the hammer and has a 19 pound spring. Would think that you have a little more meaty hammer left.

 
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Old 06-26-2002, 10:36 AM   #12
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Robert - Very, very interesting post. Yes, Teddy did replace the factory mainspring, which if I recall properly was a twisted wire spring, with a Wolff spring, but I don't remember the weight, and I don't have the paperwork in front of me. My post-modification hammer is approximately the same shape as yours now, except that what's left of the hammer spur is a bit lower than yours looks. Also, mine is still solid.

Regards,
Jon
 
Old 06-26-2002, 10:46 AM   #13
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Robert - that hammer is very cool. Is that an aftermarket or a modified factory hammer?

BigJon - The recoil spring is made from twisted wire, which is probably what you are thinking of. The main spring is what powers the hammer and Sig uses a conventional wire coil spring for that. If Teddy did the work, he probably didn't replace main spring with a lighter one but if someone else owned the pistol before you did, they might have.

Also, if you're testing for reliability, you might want to only change one thing at a time before test firing. If you make several changes and the pistol won't run then it's harder to troubleshoot the problem.
 
 
Old 06-26-2002, 11:28 AM   #14
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Dave - Sorry for the brain fart re: spring terminology; I'm not really that dumb. Roger yours re: troubleshooting in stages.

Regards,
Jon
 
Old 06-26-2002, 11:48 AM   #15
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No problem - I just wanted to make sure we were all on the same page regarding terminology
 
Old 06-26-2002, 12:40 PM   #16
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Quote:
Originally Posted by Dave Berryhill
Robert - that hammer is very cool.
My thoughts exactly. Looks like there might be a few other choice upgrades in addition to that mighty sweet lookin' hammer (e.g.: trigger, grip screws, magazine floor plate, front strap, and maybe (can't tell from this angle) sights). Finish looks pristine, and the grips downright perfect, at least compared to mine; front of my slide and dust cover are pretty much sans finish, and my grips are pretty marred, which is to be expected for a fifteen-year-old unit that gets used pretty regularly.

So, would you divulge the source of the hammer? Is it the new Sig hammer system (am betting it is)? Do they make 'em for an old Sig like my '87 model? What other mods did you go for, if any?

Nice lookin' pistol, man.

Regards,
Jon
 
Old 06-26-2002, 04:38 PM   #17
 
Join Date: Mar 2002
Posts: 129
I'm a true believer that there are good Sig pistols and terrible ones. This was one of those bad apples. Trigger from hell. So hard and rough that it made me pull the gun to the left when firing. I have two other P220 pistols (.38 Super and 9 mm) and they are both sweet shooter. Perfect in every way. Have shot other P220 pistols with the same sweet sensation, but this particular one was a dog.

My intention was to use the gun as a test bed for another P220 in .45 acp, but after working this one, it became the best of the three. I'm not a gunsmith and everything I do is from the seat of my pants. Started with the machining, so I contacted a buddy, John Bettendorf from Sandy, Oregon, to do the work. He skeletonized the factory hammer, scalloped the front strap, polished the trigger and cut the magazine well (bigger is better!). When I got the gun back, I put on the Hogue grip screws and CPMI magazine pad and began tinkering with the action. After polishing and lapping some of the parts, playing with different springs, I ended up with a beautiful action.

Only negative lesson learned is although the anodizing of the frame is hard, what is underneath is not and even with an epoxy finish the scalloping has not worn well. But I have a future modification for that. Now I'm just enjoying the gun.
 
Old 06-26-2002, 04:57 PM   #18
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I might have to "borrow" that hammer idea for customizing Sigs - It really looks sharp! It sounds like you didn't have the frame re-anodized after the machine work on the front strap.

I've been wondering about re-anodizing a Sig frame (I haven't ever had it done). There is one pin that you usually don't remove from the frame. It only goes through one side of the frame and has serrated teeth along the side. At Sig armorer's school, they strongly advised against removing this unusual pin and said it took a special tool or fixture at the factory to replace it. I'm guessing that this steel pin needs to be removed before anodizing the aluminum frame.

Does anyone know if this is true? If so, is there any way to remove and replace the pin without boogering up the frame?
 
Old 06-26-2002, 06:54 PM   #19
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Quote:
Originally Posted by Robert inOregon
I'm a true believer that there are good Sig pistols and terrible ones. This was one of those bad apples. Trigger from hell. So hard and rough that it made me pull the gun to the left when firing. ... Now I'm just enjoying the gun.
Right you are. Exactly the same thing here. I bought this one used. Believe it or not, the DA pull was a whopping 18 pounds. Teddy Jacobson remedied that. Still, it's an old pistol, so I'm just enjoying tinkering with it, although admittedly not with the same skill Robert apparently has.

Regards,
Jon
 
Old 09-20-2011, 09:53 AM   #20
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would love to see the pics

I know this is an older thread and that might be the issue. I registered for the forum thinking that it would allow me to view the pics posted but Im only getting the little box with the x in it where thd pic should be.

Can anyone help me out on how to view the pics for this thread please
 
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